02-23-2004, 10:44 AM
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CC Member
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Join Date: Dec 2001
Location: Castalia,
Oh
Cobra Make, Engine: EM cobra, 450 inch sbc running a best ET of 9.14..so far..ALL MOTOR...approx 800 horse.............ERA with 482 FE..All Aluminum Engine
Posts: 1,395
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I would say 1150 is to much for a 408....I run a 1050 Dominator on a 421 motor. Just changing the carb dropped my 60' time from 1.52 to 1.45 ...Rule of thumb for carb size is....hook up a vacuum gauge and run a quarter mile....see what the vacuum is when you cross the line......if you are pulling over 1" of vacuum the carb is too small, if you are on zero, the carb is too big. You want to be between 0 and 1"
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Jack
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